JP2019117718A - Vehicle battery system - Google Patents

Vehicle battery system Download PDF

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JP2019117718A
JP2019117718A JP2017250782A JP2017250782A JP2019117718A JP 2019117718 A JP2019117718 A JP 2019117718A JP 2017250782 A JP2017250782 A JP 2017250782A JP 2017250782 A JP2017250782 A JP 2017250782A JP 2019117718 A JP2019117718 A JP 2019117718A
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vehicle
valve body
valve
valve seat
gas
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JP6935746B2 (en
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厚志 沖
Atsushi Oki
厚志 沖
順多 片山
Junta Katayama
順多 片山
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Toyota Motor Corp
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Toyota Motor Corp
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Priority to JP2017250782A priority Critical patent/JP6935746B2/en
Priority to US16/227,811 priority patent/US10826037B2/en
Priority to CN201811561622.6A priority patent/CN109968999A/en
Publication of JP2019117718A publication Critical patent/JP2019117718A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/394—Gas-pervious parts or elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
    • B60K6/28—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the electric energy storing means, e.g. batteries or capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/92—Hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2400/00—Special features of vehicle units
    • B60Y2400/11—Electric energy storages
    • B60Y2400/112—Batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
  • Battery Mounting, Suspending (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Details Of Valves (AREA)

Abstract

To provide a vehicle battery system that can suppress generation of abnormal noise.SOLUTION: A vehicle battery system including a battery cell having an exhaust gas portion for discharging internal gas includes a battery pack mounted on a vehicle and supplying power to a driving motor of the vehicle, a smoke exhaust duct 17 connected to the battery pack to exhaust gas out of the vehicle, and a check valve 30 provided in the smoke exhaust duct 17 and suppressing the flow of gas from the outside of the vehicle toward the battery pack, and the check valve 30 includes a valve seat 31 located in the smoke exhaust duct 17 and provided with a hole 33, a valve body 32 that can be seated on the valve seat 31 and cover the hole 33, and a buffer member 39 provided between the valve seat 31 and the valve body 32 and mitigating the collision of the valve body 32 to the valve seat 31.SELECTED DRAWING: Figure 4

Description

この開示は車載用バッテリ装置に関するものである。   This disclosure relates to an on-vehicle battery device.

車載用バッテリ装置は、たとえば特開２０１７−５００５５号公報（特許文献１）および特開２０１７−９１９５０号公報（特許文献２）に開示されている。特許文献１および２に記載の構造では、車載用バッテリ装置が電池内部のガスを排出する排煙ダクトを備えている。排煙ダクトは車外へ接続されており、ガスを車外へ排出することができる。   The on-vehicle battery device is disclosed, for example, in JP-A-2017-50055 (Patent Document 1) and JP-A-2017-91950 (Patent Document 2). In the structures described in Patent Documents 1 and 2, the on-vehicle battery device includes a smoke exhaust duct for discharging the gas inside the battery. The smoke exhaust duct is connected to the outside of the vehicle, and the gas can be discharged out of the vehicle.

特開２０１７−５００５５号公報JP, 2017-50055, A 特開２０１７−９１９５０号公報JP, 2017-91950, A

特許文献に開示された構造では走行中、ドア開閉時など車内と車外とで圧力差が発生したときに車外から排煙ダクトに空気が流入する。その結果弁体が捲り上がり弁体と弁座が衝突することで異音が生じることがあった。   According to the structure disclosed in the patent document, air flows into the smoke exhaust duct from the outside of the vehicle when a pressure difference occurs between the inside and the outside of the vehicle during traveling, when the door is opened or closed. As a result, the valve body turned up, and an abnormal noise sometimes occurred due to the collision between the valve body and the valve seat.

そこで、この開示は上記の問題を解決するためになされたものであり、異音の発生を抑制できる車載用バッテリ装置を提供することを目的とするものである。   Then, this indication is made in order to solve the above-mentioned problem, and it aims at providing an in-vehicle battery device which can control generating of noise.

この開示に従った車載用バッテリ装置は、内部のガスを排出する排ガス部を有する電池セルを有し、車両に搭載されて車両の駆動用電動機に電力を供給する電池パックと、電池パックに接続されてガスを車両外に排出する排煙ダクトと、排煙ダクトに設けられて車両外から電池パックへ向かうガスの流れを抑制する逆止弁とを備え、逆止弁は、排煙ダクト内に位置して孔が設けられた弁座と、弁座に着座して孔を覆うことが可能な弁体と、弁体と弁座との間に設けられて弁体の弁座への衝突を緩和する緩衝部材とを有する。   An on-vehicle battery device according to the present disclosure includes a battery cell having an exhaust gas portion that discharges an internal gas, and is connected to a battery pack mounted on a vehicle and supplying power to a driving motor of the vehicle. And a check valve which is provided in the smoke exhaust duct to suppress the flow of the gas from the outside of the vehicle to the battery pack, and the check valve is disposed in the smoke exhaust duct. And a valve seat provided with a hole, a valve body that can be seated on the valve seat and capable of covering the hole, and provided between the valve body and the valve seat so that the valve body collides with the valve seat And a buffer member for relieving stress.

このように構成された車載用バッテリ装置では、弁体と弁座との間に設けられて弁体の弁座への衝突を緩和する緩衝部材が設けられているため、弁体が捲れ上がったとしても弁体と弁座が直接接触することなくこれらの間に緩衝部材が設けられているため異音の発生を抑制できる。   In the in-vehicle battery device configured in this manner, the valve body is raised because the buffer member is provided between the valve body and the valve seat to alleviate the collision of the valve body with the valve seat. However, since the shock absorbing member is provided between the valve body and the valve seat without direct contact between them, the generation of abnormal noise can be suppressed.

好ましくは、弁体に緩衝部材が固定されている。この場合、弁体の剛性が向上するため排煙ダクトに空気が流入しても弁体が捲り上がりがたくなり異音の発生を抑制できる。   Preferably, the buffer member is fixed to the valve body. In this case, since the rigidity of the valve body is improved, even if air flows into the smoke exhaust duct, the valve body is difficult to turn up and the generation of abnormal noise can be suppressed.

好ましくは、弁体と弁座とが対向する面に緩衝部材が設けられている。この場合、車両の振動時に緩衝部材と弁座との摩擦力により弁体の動きを規制することができる。その結果、車両の振動時に弁体が動くことで生じる異音の発生を抑制できる。   Preferably, a buffer member is provided on the surface where the valve body and the valve seat face each other. In this case, when the vehicle vibrates, the movement of the valve can be restricted by the frictional force between the buffer member and the valve seat. As a result, it is possible to suppress the generation of abnormal noise caused by the movement of the valve when the vehicle vibrates.

好ましくは、排煙ダクトは、孔が設けられた第一部材と、第一部材に接触してガスが流れる排煙空間を形成する第二部材とを有し、第一部材は上方向に開いた軸受を有し、弁体は回動軸を有し、回動軸は軸受に回動可能に支持されており、第二部材を第一部材に接触させてガスが流れる排煙空間を形成することで第二部材は軸受の開口を覆い弁体の回動軸が軸受から外れることを防止する。この場合、第二部材を第一部材に接触させて排煙空間を形成すると同時に第二部材が回動軸の外れを防止するため新たな部材を追加することなく回動軸の外れを防止できる。   Preferably, the smoke exhaust duct has a first member provided with a hole, and a second member which contacts the first member to form a smoke exhaust space through which gas flows, and the first member opens upward. The valve body has a pivoting axis, and the pivoting axis is pivotally supported by the bearing, and the second member is brought into contact with the first member to form a flue gas flow space through which gas flows By doing so, the second member covers the opening of the bearing and prevents the pivot shaft of the valve body from disengaging from the bearing. In this case, the second member is brought into contact with the first member to form a smoke exhausting space, and at the same time the second member prevents the pivot shaft from coming off, it is possible to prevent the pivot shaft from coming off without adding a new member. .

好ましくは、第一部材は電池パックから排出されるガスを車両外に放出する排気口を有し、排気口と孔との間の第一部材に設けられた条部をさらに備える。この場合下流側から水が浸入しても条部において水の浸入を阻止することができる。   Preferably, the first member has an exhaust port for discharging the gas discharged from the battery pack to the outside of the vehicle, and further includes a bar provided on the first member between the exhaust port and the hole. In this case, even if water infiltrates from the downstream side, the infiltration of water can be prevented in the strip.

好ましくは緩衝部材は多孔体である。この場合には多孔体内の孔内に異物を溜めることができるため、異物の流入および飛散を抑制することができる。   Preferably, the buffer member is a porous body. In this case, since the foreign matter can be stored in the pores in the porous body, the inflow and scattering of the foreign matter can be suppressed.

実施の形態１に従った車載用バッテリ装置の側面図である。FIG. 1 is a side view of an on-vehicle battery device according to a first embodiment. 図１中の矢印ＩＩで示す方向から見た車載用バッテリ装置の平面図である。FIG. 2 is a plan view of the on-vehicle battery device as viewed from a direction indicated by an arrow II in FIG. 実施の形態１に従った車載バッテリ装置の排煙ダクトの分解斜視図である。FIG. 6 is an exploded perspective view of a smoke exhaust duct of the in-vehicle battery device according to the first embodiment. 図３中のＩＶ−ＩＶ線に沿った断面図である。It is sectional drawing along the IV-IV line in FIG. 図４で示す排煙流路の組み立てられた状態を示す断面図である。It is sectional drawing which shows the assembled state of the exhaust-gas flow path shown in FIG. 図５で示す排煙ダクトにおいて弁体が開いた状態を示す断面図である。It is sectional drawing which shows the state which the valve body opened in the smoke exhaust duct shown in FIG. 図３中の矢印ＶＩＩで示す方向から見た弁体の平面図である。FIG. 4 is a plan view of the valve as viewed from the direction indicated by arrow VII in FIG. 3; 実施の形態２に従った車載用バッテリ装置の排煙ダクトの分解斜視図である。FIG. 16 is an exploded perspective view of a smoke exhaust duct of the on-vehicle battery device according to the second embodiment. 図８中のＩＸ−ＩＸ線に沿った断面図である。It is sectional drawing along the IX-IX line in FIG. 実施の形態３に従った車載用バッテリ装置で用いられる弁体の平面図である。FIG. 20 is a plan view of a valve used in the on-vehicle battery device according to Embodiment 3. 実施の形態４に従った車載用バッテリ装置で用いられる弁体の平面図である。FIG. 20 is a plan view of a valve used in the on-vehicle battery device according to Embodiment 4. 実施の形態５に従った車載用バッテリ装置で用いられる弁体の平面図である。FIG. 20 is a plan view of a valve used in the on-vehicle battery device according to Embodiment 5.

以下、実施の形態について図面を参照して説明する。以下の実施の形態では同一または相当する部分に同一の参照符号を付し、その説明は繰り返さない。また、各実施の形態を組み合わせることも可能である。   Embodiments will be described below with reference to the drawings. In the following embodiments, the same or corresponding parts are denoted by the same reference characters, and the description thereof will not be repeated. Moreover, it is also possible to combine each embodiment.

（実施の形態１）
図１は、実施の形態１に従った車載用バッテリ装置の側面図である。図２は、図１中の矢印ＩＩで示す方向から見た車載用バッテリ装置の平面図である。図１および図２で示すように実施の形態に従った車載用バッテリ装置１００は車両４０に搭載されている。 Embodiment 1
FIG. 1 is a side view of the on-vehicle battery device according to the first embodiment. FIG. 2 is a plan view of the on-vehicle battery device as viewed from the direction indicated by arrow II in FIG. As shown in FIGS. 1 and 2, an on-vehicle battery device 100 according to the embodiment is mounted on a vehicle 40.

図１および図２において、矢印１０１は車両４０の上方向、矢印１０２は車両４０の下方向、矢印１０３は車両４０の右方向、矢印１０４は車両４０の左方向、矢印１０５は車両の後方向、矢印１０６は車両４０の前方向を示す。   1 and 2, arrow 101 is upward of vehicle 40, arrow 102 is downward of vehicle 40, arrow 103 is rightward of vehicle 40, arrow 104 is leftward of vehicle 40, and arrow 105 is rearward of vehicle , Arrow 106 indicates the forward direction of the vehicle 40.

車載用バッテリ装置１００は、電池パック２０と、電池パック２０に接続されてガスを車両外に排出する排煙ダクト１７とを有する。電池パック２０は、リチウムイオン電池により構成される電池セル１０と、電池セル１０を収納するケーシング１５と、ケーシング１５内で電池セル１０の上方に設けられた排煙流路１３を有する。図１では内部に収納される電池セル１０が見えるようにケーシング１５の一部分を切り欠いて示している。   The on-vehicle battery device 100 includes a battery pack 20 and a smoke exhaust duct 17 connected to the battery pack 20 to discharge gas out of the vehicle. The battery pack 20 has a battery cell 10 constituted by a lithium ion battery, a casing 15 for housing the battery cell 10, and a flue gas flow path 13 provided above the battery cell 10 in the casing 15. In FIG. 1, a part of the casing 15 is cut away so that the battery cells 10 housed inside can be seen.

電池セル１０は、正極活物質層を含む正極板と、負極活物質層を含む負極板との間にセパレータを挟んで積層して渦巻き状に巻回した発電要素を、電解液と共に厚さの薄い角型の容器の中に収納したものである。電池セル１０の容器の上面中央には、容器内の圧力が上昇すると破断、開口し、容器内のガスを容器の外部に逃がす排ガス部１１が取り付けられている。   The battery cell 10 has a thickness of a power generation element in which a power generation element is spirally wound with a separator interposed between a positive electrode plate including a positive electrode active material layer and a negative electrode plate including a negative electrode active material layer. It is housed in a thin rectangular container. At the center of the upper surface of the container of the battery cell 10, there is attached an exhaust gas portion 11 which breaks and opens when the pressure in the container rises and releases the gas in the container to the outside of the container.

ケーシング１５は複数の電池セル１０を覆うように設けられている。ケーシング１５は複数の電池セル１０を衝撃から守る働きがある。ケーシング１５内では、電池セル１０が厚さ方向に複数積層されて収納されている。   The casing 15 is provided to cover the plurality of battery cells 10. The casing 15 serves to protect the plurality of battery cells 10 from impact. In the casing 15, a plurality of battery cells 10 are stacked and stored in the thickness direction.

積層された電池セル１０の容器に取り付けられた排ガス部１１の上部には、排ガス部１１が破断、開口した際に容器の中から吹き出したガスが収集される排煙流路１３が取り付けられている。図１，２に示すように、排煙流路１３は、角型断面のダクト形状で、その一端はケーシング１５から外部に突出した出口ノズル１４となっている。   On the upper part of the exhaust gas part 11 attached to the container of the stacked battery cell 10, the exhaust gas flow path 13 is attached to collect the gas blown out from the inside of the container when the exhaust gas part 11 is broken or opened. There is. As shown in FIGS. 1 and 2, the exhaust gas flow passage 13 has a rectangular cross-sectional duct shape, and one end of the exhaust gas flow passage 13 is an outlet nozzle 14 projecting outward from the casing 15.

排煙流路１３の出口ノズル１４には排煙ダクト１７が嵌合して接続されている。排煙ダクト１７は、出口ノズル１４に近い側の直線部１７ａと出口ノズル１４から遠い側の湾曲部１７ｂとを備えている。   A smoke exhaust duct 17 is engaged with and connected to the outlet nozzle 14 of the smoke exhaust passage 13. The smoke exhaust duct 17 includes a straight portion 17 a closer to the outlet nozzle 14 and a curved portion 17 b farther from the outlet nozzle 14.

直線部１７ａは、出口ノズル１４から車両４０の左側に向って延び、湾曲部１７ｂは、直線部１７ａから車両４０のフロアパネル４１に設けられた孔４２に向って下方向に湾曲する。湾曲部１７ｂの先端部分は、孔４２に差し込まれ、排煙ダクト１７の排気口１８は車両４０の外部に突出している。   The straight portion 17 a extends from the outlet nozzle 14 toward the left side of the vehicle 40, and the bending portion 17 b curves downward from the straight portion 17 a toward the hole 42 provided in the floor panel 41 of the vehicle 40. The distal end portion of the curved portion 17 b is inserted into the hole 42, and the exhaust port 18 of the smoke exhaust duct 17 protrudes to the outside of the vehicle 40.

車載用バッテリ装置１００は、排煙ダクト１７に設けられて車両４０外から電池パック２０へ向かうガスの流れを抑制する逆止弁３０を備える。直線部１７ａに設けられる逆止弁３０は、弁座３１と、弁体３２とを含む。   The on-vehicle battery device 100 includes a check valve 30 provided in the smoke exhaust duct 17 to suppress the flow of gas from the outside of the vehicle 40 toward the battery pack 20. The check valve 30 provided in the straight portion 17 a includes a valve seat 31 and a valve body 32.

車両４０は電池パック２０の電力を駆動用の電動機に供給するものである。車両４０は、電気自動車、ハイブリッド自動車などである。   The vehicle 40 supplies the power of the battery pack 20 to a drive motor. The vehicle 40 is an electric car, a hybrid car or the like.

図３は、実施の形態１に従った車載用バッテリ装置の排煙ダクトの分解斜視図である。図３に示すように、排煙ダクト１７は、略四角断面の直線部１７ａと略円形断面の湾曲部１７ｂとを含む第一部材としての本体６１と、本体６１に嵌り合う第二部材としての上半部分６２とを含んでいる。図３に示すように、車両左右方向に延びる本体６１の直線部１７ａには、水平方向に対して傾斜した弁座３１が設けられ、弁座３１の中央には孔３３が設けられている。弁座３１は、平板状で、電池パック２０の側が排煙ダクト１７の排気口１８の側よりも高くなるよう水平方向から傾斜している。   FIG. 3 is an exploded perspective view of the smoke exhaust duct of the on-vehicle battery device according to the first embodiment. As shown in FIG. 3, the smoke exhaust duct 17 includes a main body 61 as a first member including a straight portion 17 a having a substantially square cross section and a curved portion 17 b having a substantially circular cross section, and a second member fitted to the main body 61. And the upper half 62. As shown in FIG. 3, the straight portion 17 a of the main body 61 extending in the lateral direction of the vehicle is provided with a valve seat 31 inclined to the horizontal direction, and a hole 33 is provided at the center of the valve seat 31. The valve seat 31 is flat and inclined from the horizontal direction so that the side of the battery pack 20 is higher than the side of the exhaust port 18 of the exhaust duct 17.

弁体３２は、弁座３１の孔３３を覆い、その周縁が弁座３１に対面する平板状である。弁体３２には、回動軸３２ａと回動軸３２ａを支持する支持部３２ｂとが設けられている。弁体３２は、たとえば樹脂により構成される。樹脂のなかでもポリプロピレンのような、高剛性および高耐熱性の樹脂であることが望ましい。   The valve body 32 covers the hole 33 of the valve seat 31 and has a flat plate whose peripheral edge faces the valve seat 31. The valve body 32 is provided with a rotating shaft 32 a and a support portion 32 b for supporting the rotating shaft 32 a. The valve body 32 is made of, for example, a resin. Among resins, it is desirable that the resin be a highly rigid and highly heat resistant resin such as polypropylene.

弁座３１には２つの軸受３８が設けられている。軸受３８は回動軸３２ａを回動可能に支持することが可能である。孔３３の上部に軸受３８が配置されている。この実施の形態では湾曲したＬ字形状の軸受３８が設けられているが、軸受３８の一方が筒形状であってもよい。   The valve seat 31 is provided with two bearings 38. The bearing 38 can rotatably support the pivot shaft 32a. A bearing 38 is disposed at the top of the hole 33. Although a curved L-shaped bearing 38 is provided in this embodiment, one of the bearings 38 may be cylindrical.

直線部１７ａには切り欠き孔６７が設けられている。切り欠き孔６７で電池パック２０の出口ノズル１４と嵌合することで排煙ダクト１７を出口ノズル１４に固定する働きをする。   The notch part 67 is provided in the linear part 17a. By fitting the outlet nozzle 14 of the battery pack 20 through the notch hole 67, the exhaust duct 17 is fixed to the outlet nozzle 14.

直線部１７ａには、直線部１７ａの延びる方向と直交して延びる条部６８が設けられている。条部６８は、直線部１７ａの内周表面が***して形成されている。電池パック２０から条部６８までの距離は、電池パック２０から孔３３までの距離よりも遠い。条部６８は排気口１８と孔３３との間に設けられている。条部６８は弁座３１に近接して設けられている。条部６８が設けられることで、排気口１８から浸入した水分が条部６８で止まり、孔３３に水が浸入することを防止できる。   The linear portion 17a is provided with a strip 68 extending perpendicularly to the direction in which the linear portion 17a extends. The strip portion 68 is formed by raising the inner peripheral surface of the straight portion 17a. The distance from battery pack 20 to strip 68 is greater than the distance from battery pack 20 to hole 33. The strip 68 is provided between the exhaust port 18 and the hole 33. The bar 68 is provided close to the valve seat 31. By providing the strip portion 68, it is possible to prevent the moisture that has entered from the exhaust port 18 from being stopped at the strip portion 68 and the water from entering the hole 33.

上半部分６２を図３で示す位置から、矢印９２で示す方向に移動させることで本体６１に嵌合させることができる。上半部分６２が本体６１に嵌り合うことで排煙ダクト１７を形成する。上半部分６２に設けられた係合部６２ａが、本体６１に設けられた爪６１ａに係合する。   By moving the upper half portion 62 from the position shown in FIG. The upper half portion 62 is fitted to the main body 61 to form the exhaust duct 17. An engaging portion 62 a provided on the upper half portion 62 engages with a claw 61 a provided on the main body 61.

本体６１の排気口１８近傍にはパッキン９０が嵌り合っている。排気口１８は車両４０の孔４２に挿入される。パッキン９０は車両４０のフロアパネル４１と排気口１８との間に介在して排気口１８近傍を気密に封止する。   A packing 90 is fitted in the vicinity of the exhaust port 18 of the main body 61. The exhaust port 18 is inserted into the hole 42 of the vehicle 40. The packing 90 is interposed between the floor panel 41 of the vehicle 40 and the exhaust port 18 to hermetically seal the vicinity of the exhaust port 18.

図４は、図３中のＩＶ−ＩＶ線に沿った断面図である。本体６１に組み付けられる前の上半部分６２は実線で示されている。矢印９２で示す方向に上半部分６２を移動させて上半部分６２を本体６１と接触させることで排煙空間６９を形成することができる。   FIG. 4 is a cross-sectional view taken along the line IV-IV in FIG. The upper half portion 62 before being assembled to the main body 61 is shown by a solid line. By moving the upper half portion 62 in the direction indicated by the arrow 92 to bring the upper half portion 62 into contact with the main body 61, a smoke exhaust space 69 can be formed.

軸受３８の開口３８ａは上向きに開いている。開口３８ａに回動軸３２ａを挿入して軸受３８に回動軸３２ａを支持させることができる。開口３８ａ上に上半部分６２が位置することで開口３８ａが狭められる。これにより、開口３８ａから回動軸３２ａが外れることを防止できる。回動軸３２ａは弁体３２の回動中心となる。弁体３２の下型には緩衝部材３９が固定されている。緩衝部材３９は、シールスポンジなどの多孔体により構成されている。緩衝部材３９は必ずしも多孔体である必要はなく、弁座３１と接触したときに音の発生を防止できる部材であればよい。たとえばゴムであってもよい。ただし、車両４０は長期間に亘って使用されることから、車両４０の使用期間中に劣化しないものが好ましい。緩衝部材３９は、たとえばフェルトのような不織布であってもよい。さらに、緩衝部材３９が繊維質であってもよい。緩衝部材３９がＥＰＤＭ（エチレンプロピレンジエンゴム）であってもよい。   The opening 38a of the bearing 38 is open upward. The pivot shaft 32a can be supported by the bearing 38 by inserting the pivot shaft 32a into the opening 38a. The position of the upper half 62 on the opening 38a narrows the opening 38a. As a result, it is possible to prevent the pivot shaft 32a from coming off the opening 38a. The pivot shaft 32 a is the pivot center of the valve body 32. A buffer member 39 is fixed to the lower mold of the valve body 32. The buffer member 39 is made of a porous body such as a seal sponge. The buffer member 39 does not necessarily have to be a porous body, as long as it is a member that can prevent the generation of sound when contacting the valve seat 31. For example, it may be rubber. However, since the vehicle 40 is used for a long time, it is preferable that the vehicle 40 does not deteriorate during use of the vehicle 40. The buffer member 39 may be, for example, a non-woven fabric such as a felt. Furthermore, the buffer member 39 may be fibrous. The buffer member 39 may be EPDM (ethylene propylene diene rubber).

本体６１の下面に条部６８が設けられている。条部６８の高さは、孔３３の下端よりも高くなることが好ましい。これにより排煙空間６９内の水位が高くなったとしても孔３３に水が浸入することを防止できる。   A bar 68 is provided on the lower surface of the main body 61. It is preferable that the height of the striated portion 68 be higher than the lower end of the hole 33. As a result, even if the water level in the exhaust gas space 69 rises, it is possible to prevent water from entering the holes 33.

この実施の形態では、弁体３２に緩衝部材３９が設けられているが、これとは反対に弁座３１に緩衝部材３９が設けられていてもよい。弁体３２に緩衝部材３９が設けられることにより弁体３２を緩衝部材３９で補強することができる。弁座３１に緩衝部材３９が設けられることにより弁体３２の質量を増加させないため、弁体３２を早く開弁することができる。   In the present embodiment, the valve body 32 is provided with the shock absorbing member 39, but the valve seat 31 may be provided with the shock absorbing member 39 on the contrary. The valve body 32 can be reinforced by the buffer member 39 by providing the valve body 32 with the buffer member 39. Since the mass of the valve body 32 is not increased by providing the buffer member 39 in the valve seat 31, the valve body 32 can be opened quickly.

図５は、図４で示す排煙ダクトの組み立てられた状態を示す断面図である。図５で示すように排煙ダクト１７が組み立てられた状態では、排煙ダクト１７の本体６１および上半部分６２で組み立てられた排煙空間６９に傾斜するように弁座３１および弁体３２が位置決めされている。回動軸３２ａに対して弁体３２が下側に位置している。回動軸３２ａを中心として弁体３２および緩衝部材３９は下方向へ回動しようとするが、弁座３１と緩衝部材３９とが接触しているため図５で示す位置から弁体３２が下方向へ回動することができない。これに対して弁体３２が上方向に回動する場合には障害物が無いため、図５で示す位置から弁体３２は上方向へ回動することが可能である。   FIG. 5 is a cross-sectional view showing an assembled state of the smoke exhaust duct shown in FIG. When the smoke exhaust duct 17 is assembled as shown in FIG. 5, the valve seat 31 and the valve body 32 are inclined so as to incline to the smoke exhaust space 69 assembled by the main body 61 and the upper half 62 of the smoke exhaust duct 17. It is positioned. The valve body 32 is located below the pivot shaft 32a. The valve body 32 and the buffer member 39 try to rotate downward about the rotation shaft 32a, but since the valve seat 31 and the buffer member 39 are in contact with each other, the valve body 32 is lowered from the position shown in FIG. It can not turn in the direction. On the other hand, when the valve body 32 pivots upward, since there is no obstacle, the valve body 32 can pivot upward from the position shown in FIG.

開口３８ａ上に上半部分６２が位置している。上半部分６２と軸受３８との間の隙間が回動軸３２ａの直径よりも小さいため、軸受３８と上半部分６２との間を回動軸３２ａが通過することができない。その結果、回動軸３２ａが軸受３８から外れることを防止できる。   The upper half portion 62 is located on the opening 38a. Since the gap between the upper half 62 and the bearing 38 is smaller than the diameter of the pivot 32 a, the pivot 32 a can not pass between the bearing 38 and the upper half 62. As a result, the pivot shaft 32 a can be prevented from coming off the bearing 38.

図６は、図５で示す排煙ダクトにおいて弁体が開いた状態を示す断面図である。図１で示す排ガス部１１からガスが排出されると、そのガスは排煙流路１３を経由して排煙ダクト１７に導かれる。排煙ダクト１７の排煙空間６９を車室内から車室外へ向かってガスが流れる。このガスの流れに押されて、弁体３２は回動軸３２ａを中心として上方向に回動する。これにより孔３３が開かれる。弁体３２は上半部分６２と接触する。この時、弁体の回動軸３２ａに近い側のリブ３２ｎが上半部分６２と接触するようにすることで、接触時の音を低減することができる。   6 is a cross-sectional view showing a state in which the valve body is opened in the smoke exhaust duct shown in FIG. When the gas is discharged from the exhaust gas portion 11 shown in FIG. 1, the gas is guided to the smoke exhaust duct 17 via the exhaust gas flow path 13. Gas flows from the vehicle compartment to the outside of the vehicle through the exhaust gas space 69 of the exhaust gas duct 17. The valve body 32 pivots upward about the pivot shaft 32 a by being pushed by the flow of gas. The hole 33 is opened by this. The valve body 32 contacts the upper half 62. At this time, by making the rib 32 n closer to the pivot shaft 32 a of the valve body contact the upper half portion 62, it is possible to reduce the noise at the time of the contact.

弁体３２の背面側には回動軸３２ａに近いリブ３２ｎと回動軸３２ａから遠いリブ３２ｆとが設けられている。リブ３２ｎ、３２ｆの回動時の速度は回動軸３２ａからの距離に比例するため、リブ３２ｎの回動速度はリブ３２ｆの回動速度よりも小さい。そのためリブ３２ｎが上半部分６２に接触したときに発生する音は、リブ３２ｆが上半部分６２に接触したときに発生する音よりも小さい。その結果、リブ３２ｎを上半部分６２に接触させ、リブ３２ｆを上半部分６２に接触させないことで、弁体３２が開いた時の音を小さくすることができる。   On the back side of the valve body 32, a rib 32n close to the pivot shaft 32a and a rib 32f far from the pivot shaft 32a are provided. The rotation speed of the ribs 32n and 32f is proportional to the distance from the rotation shaft 32a, so the rotation speed of the ribs 32n is smaller than the rotation speed of the ribs 32f. Therefore, the sound generated when the rib 32 n contacts the upper half portion 62 is smaller than the sound generated when the rib 32 f contacts the upper half portion 62. As a result, by bringing the rib 32 n into contact with the upper half portion 62 and not bringing the rib 32 f into contact with the upper half portion 62, it is possible to reduce the noise when the valve body 32 is opened.

図７は、図３中の矢印ＶＩＩで示す方向から見た弁体の平面図である。弁体３２の最も上側に支持部３２ｂが取り付けられており、支持部３２ｂが直線状の回動軸３２ａを保持している。緩衝部材３９を介在させて弁体３２を弁座３１に着座させているため、支持部３２ｂおよび回動軸３２ａが矢印Ｒで示すラジアル方向および矢印Ｔで示すスラスト方向に動くことを抑制できる。その結果振動によるカタツキ音の発生を抑制することが可能となる。   FIG. 7 is a plan view of the valve as viewed from the direction indicated by arrow VII in FIG. A support portion 32 b is attached to the uppermost side of the valve body 32, and the support portion 32 b holds a linear rotation shaft 32 a. Since the valve body 32 is seated on the valve seat 31 with the buffer member 39 interposed, movement of the support portion 32 b and the pivot shaft 32 a in the radial direction indicated by the arrow R and the thrust direction indicated by the arrow T can be suppressed. As a result, it is possible to suppress the generation of rattling noise due to vibration.

このように構成された車載用バッテリ装置１００においては、弁体３２と弁座３１との間に設けられて弁体３２の弁座３１への衝突を緩和する緩衝部材３９が設けられている。そのため、弁座３１と弁体３２との衝突を緩和することができる。これにより、異音（バタツキ音）の音量を下げることができる。   In the on-vehicle battery device 100 configured as described above, a buffer member 39 is provided between the valve body 32 and the valve seat 31 to mitigate a collision of the valve body 32 against the valve seat 31. Therefore, the collision between the valve seat 31 and the valve body 32 can be mitigated. As a result, the volume of the abnormal noise (flapping noise) can be reduced.

弁体３２に緩衝部材３９が固定されているため弁体３２の剛性が向上する。その結果、排煙ダクト１７に空気が流入しても弁体３２が捲り上がりにくくなり異音の発生を抑制できる。   Since the buffer member 39 is fixed to the valve body 32, the rigidity of the valve body 32 is improved. As a result, even if air flows into the smoke exhaust duct 17, the valve body 32 does not easily go up, and the generation of abnormal noise can be suppressed.

弁体３２と弁座３１とが対向する面に緩衝部材３９が設けられているため、車両４０の振動時に緩衝部材３９と弁座３１との摩擦力により弁体３２の動きを規制することができる。その結果、車両４０の振動時に弁体３２が動くことで生じる異音の発生を抑制できる。   Since the buffer member 39 is provided on the surface where the valve body 32 and the valve seat 31 face each other, the movement of the valve body 32 can be restricted by the frictional force between the buffer member 39 and the valve seat 31 when the vehicle 40 vibrates. it can. As a result, it is possible to suppress the generation of abnormal noise caused by the movement of the valve body 32 when the vehicle 40 vibrates.

緩衝部材３９が多孔体であるため、多孔体内の孔に埃などの異物を保持することができる。その結果、異物が飛散することを抑制できる。   Since the buffer member 39 is a porous body, foreign particles such as dust can be held in the pores in the porous body. As a result, scattering of foreign matter can be suppressed.

（実施の形態２）
図８は、実施の形態２に従った車載用バッテリ装置の排煙ダクトの分解斜視図である。図９は、図８中のＩＸ−ＩＸ線に沿った断面図である。図８および図９で示すように、実施の形態２に従った車載用バッテリ装置の排煙ダクトでは、孔３３内にリブ３１ａが設けられている。この例では孔３３内に十字形状のリブ３１ａが設けられているが、Ｘ形状のリブ３１ａが設けられていてもよい。この例では２本のリブ３１ａが交差する形状であるが、複数のリブ３１ａが交差しない形状であってもよい。単数のリブ３１ａが設けられていてもよい。 Second Embodiment
FIG. 8 is an exploded perspective view of the smoke exhaust duct of the on-vehicle battery device according to the second embodiment. FIG. 9 is a cross-sectional view taken along the line IX-IX in FIG. As shown in FIGS. 8 and 9, in the smoke exhaust duct of the on-vehicle battery device according to the second embodiment, ribs 31 a are provided in the holes 33. In this example, the cross-shaped rib 31a is provided in the hole 33, but an X-shaped rib 31a may be provided. In this example, the two ribs 31a cross each other, but the plurality of ribs 31a may not cross each other. A single rib 31a may be provided.

実施の形態２では、軸受３８の構造が実施の形態１と異なる。実施の形態１では、所定の距離を隔てた２つの軸受３８が一つの回動軸３２ａを保持していたが、実施の形態２では、一つの軸受３８が一つの回動軸３２ａを保持している。   In the second embodiment, the structure of the bearing 38 is different from that of the first embodiment. In the first embodiment, two bearings 38 separated by a predetermined distance hold one pivot shaft 32a, but in the second embodiment, one bearing 38 holds one pivot shaft 32a. ing.

回動軸３２ａの両側に支持部３２ｂが設けられている。回動軸３２ａ、回動軸３２ａの両側の支持部３２ｂおよび支持部３２ｂが接続される弁体３２で囲まれる空間に軸受３８が挿入される。   Support portions 32 b are provided on both sides of the pivot shaft 32 a. The bearing 38 is inserted into a space surrounded by the rotary shaft 32a, the support portion 32b on both sides of the rotary shaft 32a, and the valve body 32 to which the support portion 32b is connected.

（実施の形態３）
図１０は、実施の形態３に従った車載用バッテリ装置で用いられる弁体の平面図である。図１０は、弁体３２において弁座３１と対向する面を示している。図１０で示すように、実施の形態３に従った弁体３２においては、外周部に緩衝部材３９が設けられている。緩衝部材３９を外周部にのみ設けることで、緩衝部材３９の使用量を少なくすることができる。さらに、緩衝部材３９と弁体３２との合計の質量を実施の形態１および２と比べて少なくすることができる。 Third Embodiment
FIG. 10 is a plan view of a valve used in the on-vehicle battery device according to the third embodiment. FIG. 10 shows the surface of the valve body 32 opposed to the valve seat 31. As shown in FIG. 10, in the valve body 32 according to the third embodiment, a buffer member 39 is provided on the outer peripheral portion. By providing the buffer member 39 only on the outer peripheral portion, the amount of use of the buffer member 39 can be reduced. Furthermore, the total mass of the buffer member 39 and the valve body 32 can be reduced as compared with the first and second embodiments.

（実施の形態４）
図１１は、実施の形態４に従った車載用バッテリ装置で用いられる弁体の平面図である。図１１は、弁体３２において弁座３１と対向する面を示している。図１１で示すように、実施の形態４に従った弁体３２においては、回動軸３２ａから遠い部分にのみ緩衝部材３９が設けられている。弁体３２の約半分の面積が緩衝部材３９で覆われている。 Embodiment 4
FIG. 11 is a plan view of a valve used in the on-vehicle battery device according to the fourth embodiment. FIG. 11 shows the surface of the valve body 32 facing the valve seat 31. As shown in FIG. 11, in the valve body 32 according to the fourth embodiment, the buffer member 39 is provided only at a portion far from the pivot shaft 32 a. About half the area of the valve body 32 is covered by the buffer member 39.

緩衝部材３９を弁体３２の下半分にのみ設けることで、緩衝部材３９の使用量を少なくすることができる。さらに、緩衝部材３９と弁体３２との合計の質量を実施の形態１および２と比べて少なくすることができる。   By providing the buffer member 39 only in the lower half of the valve body 32, the amount of use of the buffer member 39 can be reduced. Furthermore, the total mass of the buffer member 39 and the valve body 32 can be reduced as compared with the first and second embodiments.

（実施の形態５）
図１２は、実施の形態５に従った車載用バッテリ装置で用いられる弁体の平面図である。図１２は、弁体３２において弁座３１と対向する面を示している。図１２で示すように、実施の形態５に従った弁体３２においては、環状に緩衝部材３９が設けられている。緩衝部材は四角形状に配置されている。 Fifth Embodiment
FIG. 12 is a plan view of a valve used in the on-vehicle battery device according to the fifth embodiment. FIG. 12 shows the surface of the valve body 32 opposed to the valve seat 31. As shown in FIG. 12, in the valve body 32 according to the fifth embodiment, a buffer member 39 is annularly provided. The buffer members are arranged in a square shape.

緩衝部材３９を弁体３２と相似形状の四角の環状に設けることで、緩衝部材３９の使用量を少なくすることができる。さらに、緩衝部材３９と弁体３２との合計の質量を実施の形態１および２と比べて少なくすることができる。   By providing the buffer member 39 in a square annular shape similar to the valve body 32, the amount of use of the buffer member 39 can be reduced. Furthermore, the total mass of the buffer member 39 and the valve body 32 can be reduced as compared with the first and second embodiments.

今回開示された実施の形態はすべての点で例示であって、制限的なものではないと考えられるべきである。本発明の範囲は上記した実施の形態ではなく請求の範囲によって示され、請求の範囲と均等の意味、および範囲内でのすべての変更が含まれることが意図される。   It should be understood that the embodiments disclosed herein are illustrative in all respects and not restrictive. The scope of the present invention is shown not by the embodiments described above but by the scope of claims, and is intended to include meanings equivalent to the scope of claims and all modifications within the scope.

１０ 電池セル、１１ 排ガス部、１３ 排煙流路、１４ 出口ノズル、１５ ケーシング、１７ 排煙ダクト、１７ａ 直線部、１７ｂ 湾曲部、１８ 排気口、２０ 電池パック、３０ 逆止弁、３１ 弁座、３１ａ，３２ｆ，３２ｎ リブ、３２ 弁体、３２ａ 回動軸、３２ｂ 支持部、３３，４２ 孔、３８ 軸受、３８ａ 開口、３９ 緩衝部材、４０ 車両、４１ フロアパネル、６１ 本体、６１ａ 爪、６２ 上半部分、６２ａ 係合部、６８ 条部、６９ 排煙空間、９０ パッキン、１００ 車載用バッテリ装置。   Reference Signs List 10 battery cell, 11 exhaust gas portion, 13 exhaust gas flow passage, 14 outlet nozzle, 15 casing, 17 exhaust gas duct, 17a straight portion, 17b curved portion, 18 exhaust port, 20 battery pack, 30 check valve, 31 valve seat , 31a, 32f, 32n rib, 32 valve body, 32a rotary shaft, 32b support portion, 33, 42 holes, 38 bearings, 38a opening, 39 buffer members, 40 vehicles, 41 floor panels, 61 main bodies, 61a claws, 62 Upper half part, 62a engaging part, 68 strips, 69 smoke exhaust space, 90 packing, 100 vehicle battery device.

Claims (6)

内部のガスを排出する排ガス部を有する電池セルを有し、車両に搭載されて前記車両の駆動用電動機に電力を供給する電池パックと、
前記電池パックに接続されてガスを前記車両外に排出する排煙ダクトと、
前記排煙ダクトに設けられて前記車両外から前記電池パックへ向かうガスの流れを抑制する逆止弁とを備え、
前記逆止弁は、前記排煙ダクト内に位置して孔が設けられた弁座と、
前記弁座に着座して前記孔を覆うことが可能な弁体と、
前記弁体と前記弁座との間に設けられて前記弁体の前記弁座への衝突を緩和する緩衝部材とを有する、車載用バッテリ装置。 A battery pack having a battery cell having an exhaust gas portion for discharging internal gas, mounted on a vehicle and supplying power to a drive motor of the vehicle;
A smoke exhaust duct connected to the battery pack to discharge gas out of the vehicle;
A check valve provided in the smoke exhaust duct to suppress the flow of gas from the outside of the vehicle toward the battery pack;
The check valve is a valve seat located in the exhaust duct and provided with a hole;
A valve body capable of sitting on the valve seat and covering the hole;
An on-vehicle battery device, comprising: a buffer member provided between the valve body and the valve seat to mitigate a collision of the valve body against the valve seat. 前記弁体に前記緩衝部材が固定されている、請求項１に記載の車載用バッテリ装置。   The on-vehicle battery device according to claim 1, wherein the buffer member is fixed to the valve body. 前記弁体と前記弁座とが対向する面に前記緩衝部材が設けられている、請求項１または２に記載の車載用バッテリ装置。   The on-vehicle battery device according to claim 1, wherein the buffer member is provided on a surface where the valve body and the valve seat face each other. 前記排煙ダクトは、前記孔が設けられた第一部材と、前記第一部材に接触してガスが流れる排煙空間を形成する第二部材とを有し、前記第一部材は上方向に開口した軸受を有し、前記弁体は回動軸を有し、前記回動軸は前記軸受に回動可能に支持されており、前記第二部材を前記第一部材に接触させてガスが流れる前記排煙空間を形成することで前記第二部材は前記軸受の前記開口を覆い前記弁体の前記回動軸が前記軸受から外れることを防止する、請求項１から３のいずれか１項に記載の車載用バッテリ装置。   The smoke exhaust duct has a first member provided with the hole, and a second member forming a smoke exhaust space through which gas flows in contact with the first member, and the first member is directed upward The valve body has a pivot, and the pivot is rotatably supported by the bearing, and the second member is brought into contact with the first member so that the gas flows. The second member can cover the opening of the bearing and prevent the pivot shaft of the valve body from coming out of the bearing by forming the flowing exhaust gas space. The on-vehicle battery device according to claim 1. 前記第一部材は前記電池パックから排出されるガスを前記車両外に放出する排気口を有し、前記排気口と前記孔との間の前記第一部材に設けられた条部をさらに備えた、請求項４に記載の車載用バッテリ装置。   The first member has an exhaust port for discharging the gas discharged from the battery pack to the outside of the vehicle, and further includes a bar provided on the first member between the exhaust port and the hole. The on-vehicle battery device according to claim 4. 前記緩衝部材は多孔体である、請求項１から５のいずれか１項に記載の車載用バッテリ装置。   The on-vehicle battery device according to any one of claims 1 to 5, wherein the buffer member is a porous body.
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